Mouldboard or breast of plow



MOULDBOARD OR BREAST OF PLW Filed Aug. l5, 1952 w, E m @m O O T 0 0 wnmmma @m Vbmkm mmmn TT.m m v 0. UT .wmmmd Mmmm." umh-Sk SSMTA United States Patent O Tsutomu Takakita, and Akira Taka'kita, Nakagun, Miekemlapan Application August 15, 1952, Serial No. 304,662 Claims priority, application Japan September 6,1951

3' Claims. "(Cl'. 97'--=123) This invention relates to plows and more speciloally to the mouldboards or, as they" are sometimes designated, the breasts thereof.

An important object of the invention is to provide a skeleton mouldboard which may be adjusted as aunit with respect to a plowshare and plow frame, and lalso the individual ribs of the mouldboard adjusted with respect to the plowshare and frame, so as to expedite and improve plowing operations.

Another important object of the invention is' t-o provide a mouldboard including a plurality of spatied-apart ribs which ribs may be warped or twisted to assume selected positions with respect to the plow frame `and share so that the soil will be more readily lifted, turned, sheared andpulverized than in the case of rigid skeleton ribs of skeleton mouldboards and, consequently, the amount 9 of labor reduced in plowing.

Other objects and :advantages ofthe invention will be apparent during the course of the following detailed description of the invention, taken irl connection with the accompanying drawing forming `a part of this disclosure:

Fig. l is an elevation of a plow with the mouldboard, in vertical section, mounted thereon.

Fig. 2 is a rear elevation of the mouldboard of the invention, removed from a plow frame and share.

Fig. 3 is a view partly in side elevation and partly in longitudinal section f the mouldboard `f Fig'. l with la fragment of a share included.

Fig. 4 is a fragmentary Aupper end elevation of the mouldboard of Figs. l and 2 with a fragment of a plow frame included.

In the drawing, wherein for thepurpose of illustration is shown a preferred form of the invention and wherein similar reference characters Adesignate corresponding parts throughout the several views, the letter a designates a plow frame; b, the share thereof; c, the mouldboard; d, means between a plow frame and share and mouldboard c for moving the share and mouldboard; e, means for assisting in operating the means d.

The plow frame a and share b may be of conventional construction and changes in the frame a to adapt it to the mouldboard c, and the meansd and e will "be described subsequently.

Referring now to Figures 1 to 4 inclusive, which illustrates the mouldboard c, the latter includes a plurality of spaced-apart elongated, upwardly inclined ribs 1, each having la lowermost downturned end flange 2, substantially parallel side flanges 2d which are also downturned, and an uppermost downturned narrow end flange 2b all extending from an elongated body portion 2c and the material of the ribs 1 is such that they may be twisted or partly canted. Steel is a well-known material having such a characteristic. Preferably, as shown in Fig. 2, the ribs vary in length so as to provide a curved upper edge profile for the mouldboard and, as shown in Fig. 3, the ange 2 is longer than the other flanges.

'Bhe lower end portions of the ribs 1 are loosely sup- Patented Mar. 19, 1957 ree 2 ported by lower support means comprising a rigid bracket 3 having a body portion 3iL for attachment (as by welding) along the underside of the rearward portion of the share b and a downturned flange d extending from the body portion 32 and provided with a longitudinallyextending row of a plurality of spaced apart openings for accommodating portions of the Shanks of headed pivot pins 5 which Shanks also extend loosely through suitable openings in the flanges 2 of the ribs 1. These llanges 2 permit free movements of the ribs at their lowermost ends and extend normal to the body portions 2c of the ribs. y

Extending from and rigid with the ilange 4 ofthe bracket 3 is a support structure 6 comprising a pair 'of spaced-apart side parallel members 12 which members may be bars or rods rigidly joined, at their upper ends, by a cross member 7, which also may be a bar orrod substantially paralleling the flange 4, and midway the ends of the cross member 7 is a pivot member 8, rigid therewith and projecting from the :outer face thereof.

The pivot member 8 is carried by a bracket body 9, which has a suitable opening 9a to rotatably receive it, and this bracket body 9 is provided with a row of a plurality of spaced-apart legs terminating in feet 10 which are adapted to engage the undersides of the body portions 2c of the ribs 1 and are secured thereto in any approved way, such as by the rivets lila the shanksof which extend through suitable aligning openings in 4the body p0rtions 2c and feet 10. The bracket body 9 has la longitudinally extending slot 11 disposed adjacent its longi tudinal edge, with the opening 9a between it and the legs and feet l0. This slot il is somewhat bowed or arched longitudinally so that from a point adjacent the opening 9a the two limbs of the slot diverge toward the forward end of the mouldboard c. The slot 1.1 receives a hook portion carried by the plow frame a to be later described. Projecting outwardly from the `outer faces of each of the side members 12 of the frame structure 6 is a pair of spaced-apart projections or lugs 13 to receive portions of themouldboard adjusting means 14 torbe next described.

The angularity adjusting means 14 for the mouldboard comprises a pair of actuators, each having a body including a bifurcated or forked portion 15 slidably accommodating Lthe lowermost lug 13, with the recess l5a opening downwardly, an uppermost four-sided frame portion `16 enclosing preferably a pair of spaced-apart tongues 17 extending toward the portion 15 which tongues, with two of the sides of the frame portion i6 dene three recesses 16a, any one of which is slidably adapted to receivel the uppermost lug 13. It will be noted in Figf3 that the recesses 16a are of less length than the recess 15a so that while the entire actuator may be movediup or down the uppermost lug 13 will clear a recess `162* before the lowermost lug will have reached the, mouth `of the recess "15% When the lug 13 is in the lowermost recess 16a in Fig. l, the entire actuator will be tipped upwardly the most at the frame portion 16 and when this lug is in the uppermost recess 16a of Fig. l, the actuator is tippeddownwardly `themost at this frame portion. By referring to Figsfl and 3 it will be seen that the uppermost parts of the frame portions 16 have edge contact with the lower faces of the outermost of the ribs i and, since the ribs are interconnected by the bracket body at the feet au, the entire mouldboard will tip or'cant according to the adjustments made by positioning the uppermost lugs 13 in various of the recesses 16a. Obviously, when one uppermost lug is in the uppermost recess 16a of one actuator the other uppermost lug 13 will be in the intermediate or the lowermost recess 16a of the other actuator. Or, of course, the uppermost lugs may be in a like recess of each actuator, whereupon the mouldboard will not be canted. There is also effected by these manipulations, warping or twisting of the ribs 1 to the left or right.

The construction of the angularity adjusting means 14 is such that there is a floating connection of the means With the ribs 1 -since the actuators are not iixed nor attached to the ribs, but the outermost of the latter rest upon the actuators, and the ribs may turn or rock to a limited degree on these actuators.

The mouldboard c is movably attached to the plow frame Va through a hook portion 19 shown in Figs. l and 4, which is xedly secured to the frame a to project forwardly and with its bill within the slot 11, whereby means is provided so that the mouldboard may be guided transversely of the frame a.

Means d between the frame a and share b and mouldboard c for moving the share and mouldboard cornprises a projection S rigid with and extending downwardly from the lower face of the rigid bracket 3 and having a polygonal shaped aperture 5l to receive a polygonal shaped forward end portion of a horizontally-disposed rod 52 rotatable in bearings 53 and 54 of the lower portion of the frame 2. A screw threaded extremity, beyond the polygonal shaped portion of the rod 52 extends forwardly of the projection 50 and receives a suitable nut 55.

Means e to assist in the rotation of the means d preferably comprises an elongated handle 56 extending upwardly from the rearward end of the rod 52 adjacent the upwardly-extending portion of the frame a and has its upper end portion received in a conventional keeper bracket 57 for retaining the handle in adjusted rocked positions as is well known in the art. By oscillating the handle, the share b and mouldboard c may be rocked as a unit into inclined positions or planes to the left or right of the frame a or, when the handle 56 is substantially vertical and the uppermost projections 13 are in the center recesses 16a, the mouldboard will be inclined neither to the right nor left of the frame a.

From the above it will be seen that the ribs of the mouldboard are associated so that the mouldboard may be quickly adjusted as a whole or the ribs warped or twisted in order to dispose portions of their bodies diagonally with respect to the mouldboard as a whole. This of course, will increase the areas between portions of the ribs and provide a somewhat shearing effect upon the soil whereby the plow will be apt to travel more readily and the soil well pulverized.

Various changes may be made to the form of the invention herein shown and described without departing from the spirit of the invention or scope of the claims.

We claim:

l. An adjustable mouldboard for a plough, comprising a plurality of spaced-apart inclined longitudinally twistable ribs, each having an outer face and upper and lower end portions with each face normally in substantially the same inclined plane, a support, means loosely connecting said lower end portions to said support, and adjusting means carried by said support to warp said ribs longitudinally so that portions of like faces thereof move out of said plane, including a support structure carried by said support and having a plurality of spaced-apart projections in Vaxial parallelism and an actuating member, being forked at one end for swinging engagement with one of said projectionsl and said actuating member having at the opposite end an enlargement, and a row of a plurality of recesses to selectively receive another of said projections, with an outermost of said ribs resting upon said enlargement.

2. An adjustable mouldboard for a plough, comprising a plurality of spaced-apart inclined longitudinally twistable ribs, each having an outer face and upper and lower end portions with each face normally in substantially the same inclined plane, a support, means loosely connecting said lower end portions to said support, and adjusting means carried by said support to warp said ribs longitudinally so that portions of like faces thereof move out of said plane, including a support structure carried by said support and having a plurality of spaced-apart projections in axial parallelism and an actuating member, being provided with an elongated opening at one end for swinging engagement with one of said projections and said actuating member having at the opposite end a row of a plurality of recesses to selectively receive another of said projections, with an outermost of said ribs resting upon said opposite end.

3. An adjustable mouldboard for a plough, comprising a plurality of spaced-apart inclined longitudinally -twistable ribs, each having an outer face and upper and lower end portions with each face normally in substantially the same inclined plane, a support, means loosely connecting said lower end portions to said support, and adjusting means carried by said support to warp said ribs longitudinally so that portions of like faces thereof move out of said plane including a support structure having a pair of spacedapart parallel side members, rigid with and normal to said support, a cross member joining the side members and remote from said support, a pivot member projecting from the center of the cross member, outwardly-extending pairs of spaced-apart projections carried by the side members,

a bracket body, paralleling said cross member and rigid with said ribs at locations remote from said support and having a pivot opening receiving said pivot member, a pair of actuators pivotally and slidably carried by one each of said projections adjacent one end of each of said actuators, each actuator having, remote from the pivotal Iand Isliding connection of said actuators, a frame portion provided with a plurality of spaced-apart recesses any one of which is constructed and arranged to receive the other of said projections, the outermost two of said ribs resting upon the frame portions of said two actuators.

References Cited in the tile of this patent UNITED STATES PATENTS 17,547 Akins lune 16, 1857 537,938 v lSalter Apr. 23, 1895 1,346,600 Gleiche July 13, 1920 1,409,076 Buchanan Mar. 7, 1922 2,043,619 Henley June 9, 1936 2,217,888 Benjamin Oct. l5, 1940 FOREIGN PATENTS 32,891 Sweden Dec. l1, 1909 868,987

Germany Mar. 2, 1953 Y 

